Custom Round-to-Rectangular Tube Adapter STL file ⌀108 mm to 154×240 mm, thickness 5 mm 📦#4094

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Download this file in STL format of a round-to-rectangular adapter with an external diameter of ⌀108 mm and a rectangular section with internal dimensions 154×240 mm. The shell thickness is 5 mm and the total length is 240 mm. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end to ease insertion.
Generation date: 2025-11-30
3D Model Round-to-Rectangular Tube Adapter STL file ⌀108 mm to 154×240 mm, thickness 5 mm

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  • round-to-rectangular-adapter-d_model4094-nb0_dd{id}.stl : 1.6 Mo
STL Mesh quality : Linear deflection 0.0005 Angular deflection 0.05
No compliance warranty No compliance warranty
(Internal and private use, non-commercial – no distribution – no derivatives)
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Values for this model

This model was generated by the Round to rectangular adapter template, with the following values:
Parameter Value
#1 cylinder outer diameter 108 mm (≃4 1/4 in)
#2 cylinder inlet length 50 mm (≃1.97 in)
#3 rectangle internal length 154 mm (≃6 1/16 in)
#4 rectangle internal height 240 mm (≃9 7/16 in)
#5 rectangle inlet length 50 mm (≃1.97 in)
#6 offset Z 0 mm (0 in)
#7 offset Y 0 mm (0 in)
#8 total length 240 mm (≃9 7/16 in)
#9 thickness 5 mm (≃3/16 in)
#10 chamfer chamfers on the outside
of the cylindrical tube
and on the inside of
the rectangular tube
Metadata Value
Cylinder internal diameter 98 mm (≃3.86 in)
illustration of the parameters
Parameter overview

  • If the chamfer option on the ends is enabled, the chamfer length is equal to half the thickness.
  • The stop at the bottom of the rectangular section has a width equal to half the thickness.

Labels are used in the naming of the downloaded 3D files.

Parameter Label
#1 cylinder outer diameter diaC
#2 cylinder inlet length lentC
#3 rectangle internal length lenIR
#4 rectangle internal height heiIR
#5 rectangle inlet length lentR
#6 offset Z ofsZ
#7 offset Y ofsY
#8 total length lenT
#9 thickness thi
#10 chamfer cha

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To search for a model based on your own parameters, go to the template page Round to rectangular adapter 

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Parameter Value Unit
cylinder outer diameter 150 mm
cylinder inlet length 50 mm
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Parameter Value Unit
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cylinder inlet length 40 mm
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Parameter Value Unit
cylinder outer diameter 156 mm
cylinder inlet length 40 mm
rectangle internal length 200 mm
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Parameter Value Unit
cylinder outer diameter 156 mm
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Parameter Value Unit
cylinder outer diameter 150 mm
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Parameter Value Unit
cylinder outer diameter 100 mm
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Parameter Value Unit
cylinder outer diameter 110 mm
cylinder inlet length 50 mm
rectangle internal length 110 mm
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Parameter Value Unit
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Parameter Value Unit
cylinder outer diameter 158 mm
cylinder inlet length 43 mm
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Parameter Value Unit
cylinder outer diameter 149.6 mm
cylinder inlet length 35 mm
rectangle internal length 120 mm
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Parameter Value Unit
cylinder outer diameter 160 mm
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Parameter Value Unit
cylinder outer diameter 158 mm
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Parameter Value Unit
cylinder outer diameter 114.3 mm
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Parameter Value Unit
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Parameter Value Unit
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Parameter Value Unit
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Parameter Value Unit
cylinder outer diameter 110 mm
cylinder inlet length 30 mm
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Parameter Value Unit
cylinder outer diameter 200 mm
cylinder inlet length 70 mm
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Parameter Value Unit
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cylinder inlet length 50 mm
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Parameter Value Unit
cylinder outer diameter 65 mm
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rectangle internal length 203 mm
rectangle internal height 203 mm
rectangle inlet length 35 mm
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thickness 3 mm
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Parameter Value Unit
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rectangle inlet length 30 mm
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Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 20 mm
rectangle internal length 250 mm
rectangle internal height 270 mm
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thickness 5 mm
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Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 40 mm
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rectangle internal height 127.5 mm
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